The middle question my sister needs and i don't know how to solve it

Unc special program for high school students that pays them three $300 for joining and an additional $200 per week h& m pay students in according to the function y equals 300+240 x where why is the total paint and x is the number of weeks but love your peas students according to this graph primark uses the pay schedule according to the following table which stores pay has the greatest rate of change

Angel entered a triathlon (a three-part race). he swam 1 mile, rode his bike 30 miles, and ran 10 miles. how far did he go altogether? a. 11 miles b. 123 miles c. 41 miles d. 40 miles

Ming says that 0.24 > 1/4 because 0.24= 2/4. which best explains mings error